Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
226
AstraZeneca
AZN
$263B
| $1.21M | 0.08% |
20,069
+13,545
| +208% | +$787K |
|
|
SPLK
227
PUT
DELISTED
Splunk Inc
SPLK
| $1.2M | 0.08% |
409
-52
| -11% | -$2.75K |
|
|
ABMD
228
DELISTED
Abiomed Inc
ABMD
| $1.2M | 0.08% |
+11,001
| New | +$1.09M |
|
229
Helmerich & Payne
HP
$3.51B
| $1.2M | 0.08% |
17,879
+10,841
| +154% | +$670K |
|
|
JUNO
230
DELISTED
Juno Therapeutics, Inc.
JUNO
| $1.19M | 0.08% |
30,831
+15,706
| +104% | +$652K |
|
|
CY
231
DELISTED
Cypress Semiconductor
CY
| $1.18M | 0.08% |
112,209
+108,718
| +3,114% | +$1.04M |
|
232
Perrigo
PRGO
$1.48B
| $1.18M | 0.08% |
13,045
+5,192
| +66% | +$538K |
|
|
ARRS
233
DELISTED
ARRIS International plc Ordinary Shares
ARRS
| $1.17M | 0.08% |
55,864
+50,012
| +855% | +$1.13M |
|
234
Ball Corp
BALL
$16.7B
| $1.17M | 0.08% |
+32,362
| New | +$1.17M |
|
235
CNX Resources
CNX
$4.87B
| $1.17M | 0.08% |
87,032
+64,870
| +293% | +$759K |
|
236
ProShares UltraPro S&P 500
UPRO
$5.33B
| $1.15M | 0.08% |
103,884
+58,992
| +131% | +$637K |
|
237
CALL
SLB Ltd
SLB
$71B
| $1.14M | 0.08% |
3,650
+708
| +24% | +$54.3K |
|
238
PUT
Skyworks Solutions
SWKS
$9.45B
| $1.14M | 0.08% |
770
-871
| -53% | -$59.2K |
|
239
PUT
Delta Air Lines
DAL
$55.3B
| $1.14M | 0.08% |
3,496
+1,785
| +104% | +$75.9K |
|
240
CALL
American Tower
AMT
$77.3B
| $1.12M | 0.07% |
968
+317
| +49% | +$33.7K |
|
|
SPLK
241
DELISTED
Splunk Inc
SPLK
| $1.12M | 0.07% |
20,702
+2,203
| +12% | +$116K |
|
242
Moody's
MCO
$85.4B
| $1.12M | 0.07% |
11,957
+11,574
| +3,022% | +$1.12M |
|
243
PUT
IBM
IBM
$196B
| $1.12M | 0.07% |
7,809
+3,266
| +72% | +$468K |
|
|
TWX
244
DELISTED
Time Warner Inc
TWX
| $1.12M | 0.07% |
15,187
-95,432
| -86% | -$7.06M |
|
245
CALL
Halliburton
HAL
$27.4B
| $1.11M | 0.07% |
2,474
-465
| -16% | -$19.1K |
|
246
CALL
Goldman Sachs
GS
$324B
| $1.1M | 0.07% |
5,936
+2,659
| +81% | +$415K |
|
247
Direxion Daily Real Estate Bull 3X ETF
DRN
$48.5M
| $1.1M | 0.07% |
42,468
+14,308
| +51% | +$313K |
|
|
MPT
248
Medical Properties Trust
MPT
$2.89B
| $1.1M | 0.07% |
+72,417
| New | +$1.02M |
|
249
PUT
Las Vegas Sands
LVS
$30.5B
| $1.09M | 0.07% |
2,442
+1,284
| +111% | +$60K |
|
250
Yum! Brands
YUM
$41.2B
| $1.08M | 0.07% |
18,205
-98,354
| -84% | -$5.8M |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.